i18n: Diary + MacroRing — missed Protein/Carbs/Fat macro labels

Cleans up macro-label literals that a previous replace_all pass didn't
reach because they lived in different class names (ns-macro-lbl,
qce-macro-label, macro-lbl) with different surrounding markup.

Adds diary_deep.fat (net-new key) and reuses existing
diary_deep.protein / diary_deep.carbs across:
- MacroRing (nutrition ring below diary meal): svelte-i18n import
  added + all 3 macro legend labels
- Diary QuickCaloriesEntry inline fat pill
- Diary meal-summary nutrition pills (nutrition summary sheet +
  per-meal totals)

Author: thebigjoe1

src/components/diary/MacroRing.svelte

@@ -2,6 +2,7 @@
   import { tweened } from 'svelte/motion';
   import { cubicOut } from 'svelte/easing';
   import { slide } from 'svelte/transition';
+  import { _ } from 'svelte-i18n';
   import { energyUnit, macroLegendMode } from '../../stores/settings.js';
   import { Nutrition } from '../../lib/nutrition.js';
 
@@ -169,17 +170,17 @@
     <div class="macro-item">
       <span class="dot protein"></span>
       <span class="macro-val">{macroPcts.protein}%</span>
-      <span class="macro-lbl">Protein</span>
+      <span class="macro-lbl">{$_('diary_deep.protein')}</span>
     </div>
     <div class="macro-item">
       <span class="dot carbs"></span>
       <span class="macro-val">{macroPcts.carbs}%</span>
-      <span class="macro-lbl">Carbs</span>
+      <span class="macro-lbl">{$_('diary_deep.carbs')}</span>
     </div>
     <div class="macro-item">
       <span class="dot fat"></span>
       <span class="macro-val">{macroPcts.fat}%</span>
-      <span class="macro-lbl">Fat</span>
+      <span class="macro-lbl">{$_('diary_deep.fat')}</span>
     </div>
   </div>
 {/if}

src/i18n/en.json

@@ -1080,6 +1080,7 @@
     "optional_macros":          "Optional Macros",
     "protein":                  "Protein",
     "carbs":                    "Carbs",
+    "fat":                      "Fat",
     "serving_size":             "Serving Size",
     "num_servings":             "Number of Servings",
     "total_amount":             "Total Amount",

src/routes/Diary.svelte

@@ -1855,7 +1855,7 @@
                      bind:value={editFat} />
               <span class="qce-macro-unit" style="color:var(--macro-fat)">g</span>
             </div>
-            <span class="qce-macro-label">Fat</span>
+            <span class="qce-macro-label">{$_('diary_deep.fat')}</span>
           </div>
         </div>
         <button class="btn btn-primary w-full" style="margin-top:16px" on:click={saveEditItem}>{$_('diary.edit_item.save')}</button>
@@ -2190,7 +2190,7 @@
           </div>
           <div class="ns-macro-pill" style="background:var(--macro-fat-dim)">
             <span class="ns-macro-val" style="color:var(--macro-fat)">{Math.round(totals.fat || 0)}{#if $macroLegendMode === 'grams' && fatGoal}/{fatGoal}{/if}g</span>
-            <span class="ns-macro-lbl">Fat</span>
+            <span class="ns-macro-lbl">{$_('diary_deep.fat')}</span>
           </div>
         </div>
         <!-- All nutrients — tap a row to drill into top contributors -->
@@ -2255,15 +2255,15 @@
     <div class="ns-macros">
       <div class="ns-macro-pill" style="background:var(--macro-protein-dim)">
         <span class="ns-macro-val" style="color:var(--macro-protein)">{Math.round(_mealTotals.proteins || 0)}g</span>
-        <span class="ns-macro-lbl">Protein</span>
+        <span class="ns-macro-lbl">{$_('diary_deep.protein')}</span>
       </div>
       <div class="ns-macro-pill" style="background:var(--macro-carbs-dim)">
         <span class="ns-macro-val" style="color:var(--macro-carbs)">{Math.round(_mealTotals.carbohydrates || 0)}g</span>
-        <span class="ns-macro-lbl">Carbs</span>
+        <span class="ns-macro-lbl">{$_('diary_deep.carbs')}</span>
       </div>
       <div class="ns-macro-pill" style="background:var(--macro-fat-dim)">
         <span class="ns-macro-val" style="color:var(--macro-fat)">{Math.round(_mealTotals.fat || 0)}g</span>
-        <span class="ns-macro-lbl">Fat</span>
+        <span class="ns-macro-lbl">{$_('diary_deep.fat')}</span>
       </div>
       <div class="ns-macro-pill" style="background:var(--macro-calories-dim)">
         <span class="ns-macro-val" style="color:var(--macro-calories)">{_nsMealEnergy.value.toLocaleString()}</span>